Turbine



Oct. 6, 1931. l R. A. COFFMAN TURBINE Filed June 13, 1928 2 Sheets-Sheet 2 v QE f l 25- e'ure Shows 111- lonst dlr-wl 'siatent'ecl `Oct. 61,1 1931 Y Y t 'Ros'cofuy A, (formalin, or 1101.1sszwoon,'cnmronmnj "TUR-Bruns* v Applicationlled June 13,

f ,*This*invention,aimstoprovide a `turbine of simple construction, whichwill be found peculiarly effective in operationfnovel. means being provided for receivingthe impulse frpm 1, the pressurey iiuid. Especially, ,the invention haslfon its object, the provision .ofv anovel form of rotor, so constructed that thefluld pressure, may be, made( eiective Y .with ag'minimum-,number of partsf-iff l.

210 lIt-isi within the; province the-disclosure -to improve generallyand toenhance the utility. of devicesy 'of thatf-type, to which the inventionfappertains. fl v y l Withthe' aboveand other Aobjecvssin view,

yw`hichwill appear as. the description proj ceeds, the `invention l,resides in the combina- @tion l and; arrangement of .parts and in .the

f details? of. -constructiong hereinafter` rdescribed Y:and claimed, itbeing understood that changes inthe precise embodiinentilef the invention herein disclosed, may. zbe :madeiwthiu ,the`

,what is' claimed, 4,-vvi'thout departing `fromthespritiof the invention fn Athe;@1110011lpenyiilg,drawings :rl f- Y .i Section5@ device constructed in; accordance with the fnventicnand f Figures.. and-Stand 4S are sections, taken Y respectively, Qnf-theflneslf, 3T3, and

Theedlevice rotor includes lafn-inner,core 2; which,zior'. the

shaft 3 isr disposed withinthe core 2 andi is secured:v to.; the.. cere, asi shown at` ,4, n About c i *pledlwith Y an ledgwall -eWliCh is T spaced the,correspending,endlofl ythe coreg'2 f to f frm; yrt,chamber; ,37A [The end; Well@ hollowSheftfieilrrieled-niabell' e5-,bearing smountedin StenderdlOl/.and at l fstructurefasrthe standardglO. and the bear- Orth-Shania i,

outlet end'18 of the shell 17. The nozzles 16 discharge into the spiral passage which is l A i, formed by the partition 20.

n the core,.2, 1sdisposedgan'intermediate l,tnhiji-y 192s, kseriali No. 285,104.

shatS and a packing gland 12 is mounted in ,the shaft 8 about the pipe or conduit 11.

,Y -Securedto the inner end of the pipe 11 is l adisch-arge Ihead 14 having a chamber 15 whichfreceives lthe iuid pressure from the pipe 11.', rljhe'headll is supplied with inclined nozzle passages y16 communicating with the chamber 15 and opening through the inner/surface of the head 15 tangentially, as willbejunderstQOd 'readily when Figure' 4 of oo the drawingsis notedlV ,l

A tubular` shelll17 is disposed about the body 5 in spaced relation thereto. Oner end of the shell 17, marked by the numeral 18,

is the open end or discharge end of the shell.' 65

`On the opposite extremity of the shell 17 there is an end wall 19 which is extendedinwardly and joined to the core 2, so asto form a chamber y47 at the open end 6 of the body '5.'5' For convenience in description, and to 70 avoid confusion between the chambers 47 and i 87, the chamber 47 may be referred to as a second chamber.

A spiral partition 2O is locatedI in the space between the core 2 and the shell 5, the spiral 5 partition 20 connecting the p'artsf7 and 2. ',Aspiral partition'21r is disposed inthe space Abetweenlthebody 5 and the shell 17 and connectsfthoseparts yof the rotor lptogether. y-Ehe;partitions 20 and 21 are opp'ositely 80 ,'inclined, and the partition 20 'forms a spiral Y Sestar roterwhich is passage leading from the chamber 37 to the passage leading from the chamber 47 to the A plurality of impact members 22 extend longitudinally of the rotor 1, between the planes which are inclinedfcircumferentially of the rotor, as vshown in Figure 2 of the drawings. For the sakelof lightness, the impact members 22 maybe in the `form of pipes,

they ends of the pipes being closed, as showng'95 .at.f24 in Figurer4. Impact members 23 are l'located between lthe body 5 Vand the core 2 and are mounted in the spiral partition 20, the

impactmembers 23 being constructed like the impact members 22 and being, corre-Jyy body 5 and the shell 17 and are arrangedinz?o 'einlenei ebene heb s V Y Y ergebe eueeingeeeneifefer- 1. Tj e ribs' '25 aid in the rotationfofltle' memspondingly arranged; YThe impact membersV 22 are mounted in the spiral partition V21.

A- The shell 17, is provided on its inner surface With ribs4'25 located in alinement jwith the impact members 221 Ribs 26 on the inner suprfaer- Opfithe badi/f5 are celfespoedegly el?" rangedr vvitlilrspect to tlie impact niieil'flbkf'rsV Ae the eee'iiee eed 1s ef' the ebeny i7 there Y' are radial vanes whifclivare-y-shaM-pedin cross section as-'Shovvn in Figure 3. lThe outer ends Y of the vanes 27 are connected to the shell 17,"

and the inner ends of the vanes are connected to tliebody 5. An end plate di' ring 28e-is" body 51?; Thblld 2 9 deberia' ge sure, enter ,the @Hain geeneens ab.

ifi-11.11 Preesfe. fili ovvn-r atjSO, Yin s aced Having ythus described the invention, vvliat lsrclaimed is p Y f 1. In a device of theclass described, a rotor embodying oppositelyfinclined inner and outer'spiral passages communicating at One end of the rotor, one passage beingopen at the loppr'eesaf nid-,-and 'die ether paeeage being alsofopenl at said opposite end of the rotor, `ior the dischargey ofvivpressure fluid, thev pas- VSages' being formed spiral partitions, spaced impact members arranged in groups,

Vtbe groups being inclined circumferentially .in the@ passages;:impact'members e'zfitending longitudinally of therotor and being con- V'l-t* thireirds tjtli partitions; to :serve as reinforcements for vthe prtiids, means feeiebppeenng-ene eeeef fee,- reeel-bien,A` eea ieeeV 1eaeeeepieel peeeegeeeehaeieeder nee eee-eetwaren ieeppe'eiee eeeehe enaV where velle..peleeegz'e'sfeennbiunieaie.-f

:er1-'n e' -eieyie'ebf the aeseribeei; Meter n comprising a tubular Vbody' open-at one end, "fcdlvithin the-belly; a bubuiriehen about body,- tlierbeing 'ayviill atthe-oppo'si-te end of the body;V 'the lWall#v forming l'rst chamber vv in the* correspdiiig'- fend yof the ebbe, ,eine 'enen being provided misil en benet- Yarene: 'beni-g a eeeendebeniber et open ed ef 'fthe body, Ytbfeb'ponte end of jtbe-ebeliheving ..7 a @Mbembe-tedio ebfebreandfermingeaid Y eeeend chamber;

bedyene the Lbere nd femieg lebend-adjacent te' ebe'eniwelielfbhebody,

geeebnee'em'gbneenrreefeheieber i ieg ehe feter fier:eeueeiegfnevemeeefene. s

he bied-ee 29 eet eef'e reeetiebnfefbr epee veneiiehefexheeecefeefeeeee.

vingfa W weaning eepieeieeeeege leem-eignen fee A. I y .ybeiegpenaeaee ene endwiih eweu raming-eea ebenber andy disposed groiips`,the groups being arranged in circumferentially inclined planesy in the passages, and means in the first chamber for discharging fluid pressure into the spiral passage between the body and the core, the passages being oppositely inclined with l respect toV each other. l y 4. In a device ofthe'class described, a hollow shaft, means for supporting the shaft for 0 rotation, atubular body open at oneY end, the

opposite end of the body` being closed and' .y beingmounted upon the shaft, a tubular shelly about the body, the shell being open adjacent f f to the closed end'of the body, a core within 1,5 the body, the shell being closed about the core, the open end ,of thebody being spaced vfrom the portion of the shell which is closed about the core, oppositely inclined spiral `pare v titons between the core and the body, and 20 between the body and the shell, and a dis charged headon the shaft and communicating with the interior of the shaft, the head having a central chamber and having nozzles communicating with the chamberv and dis'- 25 charging through they nnersde of the head `into the space between the core and the body, the head being located within the body and between one end of thefcole andthe Closed lend of thebody. l l v .so In" testimony that I claim the foregoing, as my own, I have hereto aiiixed my signature.

ROSCQE A. VCOFFIVIAN.l

fiov 

